13/08/2026
The Spower Japan R7GT SOUL II is a premium, factory hand-modified .21 nitro racing engine specifically designed for 1:8 scale GT class radio-controlled cars. Engineered by the SWORKz team, it builds directly upon the success of the original R7GT Soul and is precision-modified in Japan using the high-performance O.S. Speed R21GT II platform as its base.
Expert Hand Tuning: Features hand-modified porting on the cylinder sleeve and crankcase to maximize airflow efficiency and deliver a broad, smooth powerband. Enhanced Internal Timing: Optimizes standard 5 scavenging ports and 3 exhaust ports to stay compliant with international IFMAR racing regulations. Advanced Crankshaft: Outfitted with a highly durable Diamond-Like Carbon (DLC) coating and precision-balanced with two tungsten counterweights for lightning-fast RPM response and stable idling. Boost Rear Cover Plate: Equipped with Spower's custom backplate, which stabilizes pressure from top-end speeds right down to lower-end transitions.Aesthetic Cooling Head: Styled with a newly engineered, vibrant printed cooling head that increases heat dissipation efficiency while giving your chassis a distinctive look.
Performance Specifications (R7GT Base)Displacement: 3.49cc (0.213 cu.in.)Power Output: ~2.66 ps / 2.62 hp at 34,000 RPM.Practical RPM Range: 4,000 to 43,000 RPM.Bore & Stroke: 16.08mm x 17.2mm Pre-Broken In: Delivered with a precision factory pre-break-in process on the piston and cylinder liner to dramatically save track prep time and maximize out-of-the-box longevity
